Compressible flows on moving domains: Stabilized methods, weakly enforced essential boundary conditions, sliding interfaces, and application to gas-turbine modeling

Date
2017-11-24
Authors
Xue, Fei
Moutsanidis, George
Hsu, Ming-Chen
Kamensky, David
Hsu, Ming-Chen
Murugan, Muthuvel
Ghoshal, Anindya
Bazilevs, Yuri
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Mechanical Engineering
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Mechanical Engineering
Abstract

A novel stabilized formulation for 3D compressible viscous flows on moving domains is developed. New weak imposition of essential boundary conditions and sliding-interface formulations are also proposed in the context of moving-domain compressible flows. The new formulation is successfully tested on a set of examples spanning a wide range of Reynolds and Mach numbers showing its superior robustness. Experimental validation of the new formulation is also carried out with good success. In addition, the formulation is applied to simulate flow inside a gas turbine stage, illustrating its potential to support design of real engineering systems through high-fidelity aerodynamic analysis.

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This article is published as Xu, Fei, George Moutsanidis, David Kamensky, Ming-Chen Hsu, Muthuvel Murugan, Anindya Ghoshal, and Yuri Bazilevs. "Compressible flows on moving domains: Stabilized methods, weakly enforced essential boundary conditions, sliding interfaces, and application to gas-turbine modeling." Computers & Fluids 158 (2017): 201-220. DOI: 10.1016/j.compfluid.2017.02.006.

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